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export_mesh_to_tessellation to consider empty material slots #6453

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Andrej730
2025-03-28 12:01:04 +05:00
parent 69ddf52ff0
commit f08f9ad310
1 changed files with 4 additions and 0 deletions
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src/bonsai/bonsai/tool/geometry.py
+4
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@@ -1931,6 +1931,7 @@ class Geometry(bonsai.core.tool.Geometry):
def export_mesh_to_tessellation( def export_mesh_to_tessellation(
cls, obj: bpy.types.Object, ifc_context: ifcopenshell.entity_instance cls, obj: bpy.types.Object, ifc_context: ifcopenshell.entity_instance
) -> ifcopenshell.entity_instance: ) -> ifcopenshell.entity_instance:
ifc_file = tool.Ifc.get()
builder = ifcopenshell.util.shape_builder.ShapeBuilder(tool.Ifc.get()) builder = ifcopenshell.util.shape_builder.ShapeBuilder(tool.Ifc.get())
unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get()) unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
items = [] items = []
@@ -1946,7 +1947,10 @@ class Geometry(bonsai.core.tool.Geometry):
items.append(item) items.append(item)
material_index = mesh.polygons[0].material_index material_index = mesh.polygons[0].material_index
if materials := list(mesh.materials): if materials := list(mesh.materials):
# TODO: we don't account for multiple materials if they're not on loose parts.
material = materials[material_index] material = materials[material_index]
if not material:
continue
if not (style := tool.Ifc.get_entity(material)): if not (style := tool.Ifc.get_entity(material)):
style = ifcopenshell.api.run("style.add_style", tool.Ifc.get(), name=material.name) style = ifcopenshell.api.run("style.add_style", tool.Ifc.get(), name=material.name)
if material.use_nodes: if material.use_nodes: